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QuantHEP Seminar, Nathan Wiebe

Date: June 8, 2022

New session of the QuantHEP Seminar – Quantum Computation and High-Energy Physics Seminar:

Title: Hybridized Quantum Algorithms for Simulation of Chemistry and Field Theory

Speaker: Nathan Wiebe (University of Toronto)

Date: Wednesday 8 June 2022

Time: 17h00 Brussels = 16h00 Lisbon = 11h00 New York = 8h00 San Francisco = etc.

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Abstract: In this lecture I will discuss recent developments by my colleagues and I that examine the application of novel and hybridized methods for simulating physical systems by transforming into the interaction picture or by incorporating error correction directly into the simulation algorithm. In particular, I will go into detail about how such methods can give the best known scaling for simulating fermionic systems in first quantization and show how these methods can also be used to simulate U(1) lattice gauge theories and collective at cost that scales better with the cutoff than any known method. Additionally, I will show that these approaches can be used to simulate constrained quantum dynamics efficiently unlike most previously considered schemes. Finally, I will show a new approach to quantum error correction for lattice gauge theories that allows the Gauss’ law constraint to allow us to reduce the qubit overhead needed to perform quantum error correction below that expected from a naive implementation of the [5,1,3] code.

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